baber/WOPTO huggingface dataset:
Patent GB-112395-A (GB)
Title: An Improvement in Purifying Exhausted Sulphite-cellulose Liquors.
Inventor: BLOXAM ARTHUR GEORGE
IPC: D21C11/00
Filed: 1917-08-10
Abstract: 112,395. Bloxam, A. G., (Zellstoff-fabrik Waldhof). Aug. 10, 1917. Waste products, treatment and utilization of.- Sulphite-cellulose liquor, freed from lime by addition of carbonate of sodium, potassium, ammonium, &c., is treated to convert the residual salts to sulphates and is then cooled to crystallize them out. Before addition of the requisite quantity of sulphuric acid, the liquor may be concentrated to 30‹ BÚ. It may be stirred while cooling, and allowed to stand for some hours or days, after which the crystallized sulphates are removed, the liquor being then substantially free from mineral matter.
Patent GB-768798-A (GB)
Title: Improvements in or relating to coking retort oven with graduated liner wall
Inventor: BECKER JOSEPH
IPC: C10B5/00
Filed: 1955-04-21
Abstract: 768,798. Coke ovens. KOPPERS CO., Inc. April 21, 1955, No. 11598/55. Class 51 (2). In a regeneratively-fired coke oven battery, particularly of the compound cross-over fluid type disclosed in Specification 448,282, the coking chambers 10 taper to increase in width from the pusher side 10a to the coke side 10b, and the liner walls 13 in the same horizontal plane along each heating wall decrease in thickness from the narrow to the wide end of the coking chambers from a range of 3¢ to 5 inches to a range of 2¢ to 4 inches. Preferably, the thickness of each liner wall 13 is graduated in a series of wall portions 19 of successively decreasing stage of “ inch. As in the aforementioned Specification, the thickness of the liner walls decreases stepwise vertically up the heating wall. The invention may be applied to other heating flue systems, such as twin flues or to a series of single flues as disclosed in Specification 28811/04, [CLass 51].
Patent GB-816563-A (GB)
Title: Improvements in or relating to a thrust bearing
IPC: F16C19/30
Filed: 1956-04-17
Abstract: 816,563. Thrust bearings. ANDERSON CO. April 17, 1956 [June 1, 1955], No. 11635/56. Class 12 (1). A thrust bearing comprises three rollers 30, having toroidal portions 31, 32, mounted in a carrier 35 and adapted to contact a flange 25 on a shaft 18. The carrier 35 consists of two plates 36, 37 riveted together and containing dimpled portions 41, 42, in which the end trunnions 34 of two of the rollers 30 are journalled, and elongated dimple portions 42a, in which the trunnions 34 of the third roller 30 are adapted to be mounted. The third roller 30 is pressed resiliently into engagement with the shaft flange 25 by a leaf-spring 45 which acts on an intermediate member 50. The carrier 35 is attached resiliently to a support 16 by means of bolts 54, nuts 61 and rubber bushes 58. In a modification, the shaft passes through both sides of the carrier. The invention is applied to a window lift mechanism of a vehicle.
Patent GB-735739-A (GB)
Title: Improvements in or relating to the production of heparin
IPC: C08B37/10
Filed: 1953-04-28
Abstract: A crude heparin extract is mixed with a basic dye of the thiazine group, excess dye is removed from the resulting precipitate, the precipitate is then dissolved in a solvent which does not substantially affect the heparin and an electrolyte and a precipitating agent for the heparin added and the precipitated heparin recovered.  The crude heparin extract may be prepared by known methods from lung or liver tissues but it is preferred to use an alkaline extract fully saturated with ammonium sulphate. Suitable dyestuffs include thionine and Azure A.  The dye-heparin product may be dissolved in formamide, dimethylformamide or N-caustic soda. Electrolyte (sodium chloride) may be added to form a saturated solution in the liquid present and the heparin precipitated by addition of methanol, ethanol or acetone.  The formation of the heparin dye complex may be carried out at temperatures not above 25-30 DEG  C.  In an example minced lung tissue is extracted with 2N caustic soda and ammonium sulphate and filtered.  To the filtrate an aqueous solution of Azure A is added, the precipitate filtered off and washed with distilled water and 0.05 N hydrochloric acid to remove excess dyestuff. The washed precipitate is dissolved in formamide, and after centrifuging saturated sodium chloride and methyl alcohol added. The precipitated heparin is purified by redissolving in formamide, adding saturated sodium chloride and precipitating with methyl alcohol.
Patent GB-570897-A (GB)
Title: Improvements in or relating to hydraulic jacks
IPC: F15B15/26
Filed: 1943-10-22
Abstract: 570,897. Hydraulic machines. MESSIER AIRCRAFT EQUIPMENT, Ltd., and CONWAY, H. G. Oct. 22, 1943, No. 17445. [Class 69 (ii)] [Also in Group XXX] In hydraulic jacks of the kind having locking means inside the cylinder for holding the piston retracted and a pressure-operated device for releasing the locking means which is independent of the pressure within the jack, a supplementary jack is provided which is connected with the main jack to assist its extension and is in communication with the unlocking means. The piston 11 of the main jack is mounted on a hollow piston-rod 9 provided with a forked head 12. Locking tongues 13, similar to those described in Specification 548,386, project from each face of the piston and co-operate with locking sleeves 3, the tongues in the locked position engaging bolts 14, 17. A supplementary jack comprising a piston 20 and hollow piston-rod 21, one end of which carries a piston 24 working in a cylinder 23. When the jack is to be extended, fluid admitted to the cylinder 23 moves the piston 24 and the bolt 17 to free the piston 11. At the same time the pressure fluid is applied to the closed end of the pistonrod 9, thus assisting the movement of the rod caused by the action of pressure fluid from an accumulator which enters through a connection 19 to act on the piston 11. The pressure of this fluid is, however, too low to force the bolt 17 to the right against the pressure exerted by the spring 18. The piston 24 may be moved by a cable in the case of failure of the supply of pressure fluid to the connection 28. In a modification (not shown), the piston 24 is dispensed with, and the rod 21 is forced to the right solely by the action of the fluid on the piston 20. In a further modification, fluid supplied through the connection 19 is at a pressure sufficiently high to move the bolt 17.
Patent GB-498989-A (GB)
Title: Process for the production of a coating composition
IPC: C09D115/02
Filed: 1938-04-19
Abstract: Coating compositions, resistant to weather influences and to lyes and seawater, comprise chlorinated rubber, a solvent therefor, and thionated products of p-alkyl-substituted anilines or their substitution products or derivatives.  The mixtures may be heated during preparation, and organic or inorganic pigments, drying oils and softening agents may be added.  According to examples, coating compositions contain: (1) chlorinated rubber, chlorobenzene, polychromine melt, and a softening agent such as methyl adipic acid methylhexaline ester; (2) chlorinated rubber, xylol, toluol, dehydro-thio-p-toluidine, a softening agent and a pigment dyestuff of the constitution m-nitro-p-toluidine-azo-b -naphthol; (3) chlorinated rubber, xylol, chlorobenzene, polychromine melt, aluminium bronze, linseed oil, stand oil, and tricresyl phosphate; (4) chlorinated rubber, tetralin, chlorobenzene, polychromine melt, gas soot and a softener; (5) chlorinated rubber, toluol, chlorobenzene, sangajol, gas soot or graphite, and dehydrothio-p-toluidine; (6) chlorinated rubber, chlorobenzene and polychromine melt, the mixture being maintained for some hours at 80-90 DEG  C.ALSO:Coating-compositions, resistant to weather influences and to lyes and sea water, comprise chlorinated rubber, a solvent therefor, and thionated products of p-alkyl substituted anilines or their substitution products or derivatives.  According to examples, coating compositions contain: (1) chlorinated rubber, chlorobenzene polychromine melt (Colour Index No. 812) and a softening agent such as methyl adipic acid methylhexaline ester; (2) chlorinated rubber, xylol, toluol, dehydro-thio-p-toluidine, a softening agent and a pigment dyestuff of the constitution m - nitro - p - toluidine - azo - b  - naphthol; (3) chlorinated rubber, xylol, chlorobenzene, polychromine melt, aluminium bronze, linseed oil stand oil and tricresyl phosphate; (4) chlorinated rubber, tetralin, chlorobenzene, polychromine melt, gas soot and a softener; (5) chlorinated rubber, toluol, chlorobenzene, sangajol, gas soot or graphite, and dehydrothio-p-toluidine; (6) chlorinated rubber, chlorobenzene and polychromine melt, the mixture being maintained for some hours at 80-90 DEG  C.
Patent GB-732121-A (GB)
Title: New mono-azo dyestuffs
Inventor: KNIGHT ARTHUR HOWARD
IPC: C09B29/30
Filed: 1952-05-09
Abstract: The invention comprises dyestuffs of formula <FORM:0732121/IV (c)/1> where X is H, an alkyl radicle of not more than 5 C atoms, an alkoxy group of not more than 4 C atoms or CnH2nOY, where n is 1-3 and Y is an alkyl radicle of not more than 4 C atoms.  The dyestuffs are made by coupling diazotized 2 - amino - 4 - trifluoromethyl - benzenesulphuric acid with the requisite naphthalene derivative. Specified coupling components are 2-acetyl-, -propionyl-, -n-butyryl-, -isobutyryl-, -methoxyacetyl-, -ethoxyacetyl-, -isopropyloxyacetyl-, -n-butoxyacetyl-, -g -methoxy-propionyl-, -formyl-, -carbomethoxy- and -carboethoxy - amino - 5 - naphthol - 7 - sulphuric acid.  Wool, silk and leather are dyed from an acid bath in bright orange shades.  Examples are provided showing the preparation of dyestuffs from certain of the above specified components and their use in dyeing wool.  In the Provisional Specification, X may also be an alkyl group of not more than 6 C atoms and the H attached to N may also be an alkyl radicle of not more than 4 C atoms.  Additional components are specified.ALSO:2 - Amino - 4 - trifluoromethylbenzenesulphonic acid is made by treating 2,21-dinitro-4,41-di-(trifluoromethyl)diphenyl disulphide with chlorine in aqueous medium, hydrolysing the 2-nitro - 4(trifluoromethyl) - benzene sulphonyl chloride thus obtained and reducing the nitro group.
Patent GB-440638-A (GB)
Title: Improvements in and relating to photography by flashlight
IPC: G03B15/04
Filed: 1935-02-06
Abstract: 440,638. Actuation of switches. GOLDRING, E. A. H., 5, Austin Estate, West Street, Farnham, Surrey. Feb. 6, 1935, No. 11761/34. [Class 38 (v)] [See also Group XX] A switch for completing an electrical circuit through a flash bulb or through means for igniting flash powder consists of a tubular casing for insertion between the shutter casing of a camera and the flexible release, and including two tubular metallic contact members connected by a tubular insulating member and enclosing a sliding metallic plunger to close the circuit when moved by depression of the release and at the same time actuate the camera shutter by means of a rod on the sliding member. In a modified form applicable to shutters of the pre-set type, the circuit is partly completed by the switch, the setting lever completing the circuit during its return movement. In the form shown, the switch consists of two metallic sleeves 23, 24, Fig. 3, united by a non-conducting portion 22. The flexible release 3 is screwed into the sleeve 23 and the sleeve 24 is screwed into the shutter casing. Inside the sleeve 23 is a plunger 27 of metal which bears against a non-metallic plug 29 carrying a rod 30. Pressure on the release 3 moves the plunger 27 to connect the sleeves 23, 24, the rod 30 simultaneously operating the shutter of the camera. The plug 29 is provided with a return spring 31. Wires 4, Fig. 1, connect the parts 23, 24 to a socket 5 and a depending part thereof 6 which is insulated therefrom and in electrical connection with one side 12 of a battery 8, the socket 5 being connected to a plate 9. The other terminal 13 of the battery is connected to a terminal 18 mounted on and insulated from the plate 9. The terminals 17, 18 are connected by an igniting wire 11 for the flash powder. Alternatively, a flash bulb may be screwed in the socket 5. In a modified form, the casing carries an arm mounted on one end and bearing a spring contact adapted to complete the circuit through the bulb when engaged by the setting trigger in its return movement. To vary the timing of the flash and shutter release the part 24 may be provided with an internal sliding sleeve held in place by a set screw. A block 21 having terminals 20 to which several bulbs may be connected in parallel, may be interposed in the circuit.
Patent GB-690077-A (GB)
Title: Glow plug for compression-ignition engine
IPC: F23Q7/00
Filed: 1951-05-21
Abstract: The cast protective casing of an incandescent plug for a compression-ignition engine (see also Group XXVII) is made of an alloy comprising iron, cobalt, nickel, chromium, tungsten and carbon as basic ingredients with the addition of 3 per cent or less of one or more of the following: molybdenum, columbium and nitrogen.  A preferred material, such as that known under the Registered Trade Mark of "Stellite Multimet" alloy, has the following composition: 0.3-0.4 per cent carbon, 18-22.5 per cent chromium, 18-22 per cent nickel, 2.75-3.75 per cent molybdenum, 0.75-1.5 per cent columbium, 2-3 per cent tungsten, 18-22 per cent cobalt, 0.1-0.2 per cent nitrogen and 32-34 per cent iron, the iron content being of the order of 1.65 times that of the chromium, nickel and cobalt respectively. The above percentages are by weight.
Patent GB-1490349-A (GB)
Title: Pinch valves
IPC: A61M5/168
Filed: 1974-03-18
Abstract: 1490349 Valves J H GOOCH & CO Ltd 12 March 1975 [18 March 1974] 11817/74 Heading F2V A pinch cock comprises a resilient tubular member 12 having at least one transversely elongate passageway 14 and a control member 16 surrounding the tube and movable to contact the tube in different positions so as to open or close the passageway. The control member may be operated by a lever which may be attached to a ball float. Roller bearings may be mounted in the inner surface of the control member and stops may be provided to limit the rotation of the control member. The tube may be of moulded rubber or plastics and may be moulded integral with tubular end-pieces for pipe connection.
Patent GB-746853-A (GB)
Title: A kneading machine for treating and conveying plastic masses
IPC: B29C48/41
Filed: 1953-04-29
Abstract: 746,853. Kneading appliances. KLEINLEIN, F. April 29, 1953 [May 5, 1952], No. 11828/53. Class 86. [Also in Group XXX] A kneading machine for treating and conveying plastic masses consists of a plurality of intermeshing worms, located within a casing with which the thread bars of the worms make wiping contact, at least one of each pair of intermeshing worms having a continuous rolling track of a diameter greater than its core diameter and less than the diameter swept by its thread bar and on which track bears the thread bar of the intermeshing worm. In Fig. la a pair of oppositely rotating intermeshing worms 1, 2 within a casing 9 have thread bars 3 and 4 which bear respectively on rolling tracks 6 and 5 on the worms 1 and 2. In a modification, Fig. 3, the thread bars 3, 4 increase in width progressively for part of their length, from opposite ends of the respective worms 1, 2, the remaining parts of the thread bars being undercut to form two narrow threads which define a helical gap the bases 12, 13 of which are formed by the cores of the worms. The thread bars which are not undercut fit between the narrow thread bars of the opposed worm. The thread bars bear on the rolling tracks 5, 6. The core of the worms may consist of a series of alternate conical and cylindrical portions, Fig. 4 (not shown) and Fig. 5. In Fig. 5 the rolling tracks are located between pairs of thread bars 14, 15 and 19, 20 on the conical core portions. Three or more interengaging worms may be provided and the invention can be applied to worms rotating in the same direction.
Patent GB-460638-A (GB)
Title: Improved bearing for chain wheels
IPC: F16H55/30
Filed: 1935-04-17
Abstract: 460,638. Bearings. VOLETS ET PORTES EQUILIBRES SOC. ANON. April 17, 1935, Nos. 11896 and 11897. Void. Convention dates, April 17, 1934 and Aug. 17, 1936. [Class 12 (i)] The shaft 10, supporting a chain 9, is journalled by an arcuate groove 5 which engages rollers 3 carried by teeth 1 of the chain wheel 2. The wheel teeth allow the rods 8 of the chain to pass through the bearing. In a modification the rollers are arranged in an arc and carried by the fixed member, the teeth of the wheel having a T-shaped cross-section to run over them.
Patent GB-1166212-A (GB)
Title: Improvements in and relating to Mechanical Clamping Arrangements for Tubular Bodies
Inventor: GATTRUGERI GIOVANNI
IPC: B65H75/24
Filed: 1968-03-12
Abstract: 1,166,212. Securing tubes on shafts. G. GATTRUGERI. 12 March, 1968 [14 March, 1967], No. 11916/68. Heading F2U. A tubular member 12, Fig. 1, e.g. for winding a continuous flexible web, is supported by a hollow shaft 1 having radially movable cylindrical struts 4, 5 which abut angularly spaced and equally inclined planes 7 on pairs of rigid members 8, 10 having oppositely inclined planes, the members being moved towards and away from each other by means which move only one member of the pair by reacting on the other member when the latter is stationary with respect to the shaft. Members 8 and 10 are prevented from rotating in shaft 1 and are moved by rotating a rod 11 which engages screw-threads of opposite hands. In a modification pairs of rigid members are moved by a rod which is screw-threaded into one member of a pair whilst the other member is restrained from moving on the rod by rings (20, 21), Fig. 3 (not shown). Two pairs of such rigid members are mounted in the same shaft (40) to clamp two separate and coaxial tubular members (41, 42) and in a further modification a single tubular member is clamped by two coaxial sections of shaft. In another modification one hollow centre rod receives the other centre rod whereby the rigid members can be moved by operating both of the centre rods from the same side of the shaft. In all embodiments the projecting ends of the supporting shaft can be received in bearings or supports.
Patent GB-1163388-A (GB)
Title: A Tool for Finish Machining of Gear Wheels
IPC: B23F21/28
Filed: 1968-03-12
Abstract: 1,163,388. Gear finishing tool. CARL HURTH MASCHINENUND ZAHNRADFABRIK. 12 March, 1968 [23 March, 1967; 19 April, 1967; 1 Aug., 1967], No. 11953/68. Headings B3K and B3L. A shaving tool 30 for the finish-machining of gear-wheels comprises a toothed cutting body in the form of a spur or helical gear-wheel or toothed rack and is composed of a plurality of disc-like toothed elements 34, 35 disposed side by side, the elements having tooth flanks which form the tooth flanks of the cutting body, adjacent elements being relatively off-set so that the leading tooth flanks of the cutting body are formed by the leading tooth flanks of a first set of alternate cutting elements 34 and the trailing tooth flanks are formed by the trailing tooth flanks of the other set of alternate cutting elements 35. The two sets of elements are adjustable relatively to each other and may be clamped, e.g. by bolts 37 the arrangement being such that after being ground for sharpening the original tooth form and thickness may be maintained. In one embodiment, Figs. 6, 7, pins 40, 45a are secured to respective sets of cutting elements 34, 35 each pin passing through enlarged holes 42, 44 in the other set to allow for relative adjustment. A cam portion 45 engaging the pin 45a is provided on the pin 40 rotation of which thereby adjusts the setting of the cutter elements. A scale 48 on the cam 45 is provided for gauging the setting of the elements 34, 35. Spacer discs may be disposed between the cutting elements (Figs. 3, 9, not shown) and in such embodiments each cutting element may initially have two flanks, i.e. a leading and trailing cutting flank so that the elements of both sets are initially aligned and only offset after sharpening has altered the tooth form and thickness. The elements may be shouldered to ensure axial alignment and may be bonded together by adhesive or soldered or welded together. Hard metal, carbide or ceramic material cutting elements may be used.
Patent GB-1304457-A (GB)
IPC: B41M1/26
Filed: 1970-03-12
Abstract: 1304457 Printing apparatus MINNESOTA MINING & MFG CO 12 March 1970 [13 March 1969] 12016/70 Heading B6C Sharp-edged impressions are produced on a tacky-surfaced tape or sheet material 25 by causing the material to adhere to the face of an intaglio printing block 20 or 42, or of a plurality of such blocks, held in a carrier 11 or 41, and causing a powder ink 24 to adhere to the tacky surface in the pattern of the intaglio image. The ink may be held in deep intaglio wells, and be applied by inversion of the block-carriersheet assembly, or by vibratory, electrostatic or magnetic means. Alternatively the intaglio image may communicate with the interior of the carrier 41, where a single body of powder ink supplies all parts of the image. The block 20 or 42 may be of aluminium, zinc, steel, copper, acrylic plastics, nylon, phenol formaldehyde resin, metal-plated plastics material or plastics material incorporating electrically conductive metals or compounds, and may be held in the carrier by friction, by magnetism or by engaging grooves 50 with flanges 44. The ink may have a particle size of 5 to 60 microns, and be either black or coloured. It may be a powdered thermoplasic ink, or may contain microcapsules or reflective beads. A preferred ink contains an epoxy resin, magnetite, carbon black and SiO 2 . If the sheet 25 is of cellulose acetate, raised characters 30 may be produced on its side away from the ink by heating it after application of the ink and before removal from the block. Transfers may be made by printing on silicone material which releases the ink to a more tacky surface, or by printing on an elastomeric surface with a thermoplastic ink which can be released by application of heat.
Patent GB-1246041-A (GB)
Title: Improvements in and relating to autogenous torches
IPC: F23D14/82
Filed: 1969-03-07
Abstract: 1,246,041. Gas torches. MESSER GRIESHEIM G.m.b.H. 7 March, 1969 [8 March, 1968], No. 12154/69. Heading F4T. A gas-fuelled welding or cutting torch is protected against flash-back damage by the provision of a fuel shut-off valve between a gas supply pipe and a mixing chamber, the valve being operable to shut off the gas supply under the influence of a pressure wave. Fig. 1.-Gas A flows past a diaphragm 19 and through passages 17, 13 to mix with oxygen S in mixing chamber 11. The mixture passes to a nozzle, a portion of it diffusing into storage chamber 22 via passage 23. On flash-back, the mixture in chamber 22 is ignited and the pressure rise moves diaphragm 19 to shut off the supply. Fig. 3.-To increase the delay before the valve 18, 19 re-opens, the entrance to storage chamber 22 may be closed by a spring-loaded non-return valve 25, a by-pass passage 32 being provided to permit the chamber to fill with oxygen-gas mixture. Fig. 4.-A piston 36, supported between springs 36, 39, blocks passage 40 into chamber 35. On flash-back, the pressure wave deflects piston 36 so chamber 35 fills with high-pressure mixture, then, as the wave abates, the mixture pushes the piston in the reverse direction to shut off the supply until the mixture pressure falls, due to leakage. Fig. 5.-A sliding sleeve 45 is moved by the influence of the pressure wave on flange 46, causing portion 50 to move between two sealing rings 52, 53. The valve is released manually by pressure on plunger 58. Fig. 6.-A spring-loaded piston 67 is held away from outlet 80 by engagement of collar 71 with edge 84 of spring-loaded detent 70. Slide 66, moved by the pressure wave, releases the detent, closing the valve, which is reopened manually using button 81. Fig. 7.-Flash-back pressure moves diaphragm 95, closing valve 91. Spring-loaded plunger 98 retains the valve closed until the pressure in chamber 89 has dropped to a considerable extent.